102111221210001 has 32 divisors (see below), whose sum is σ = 136419136865280. Its totient is φ = 67938900724800.

The previous prime is 102111221209981. The next prime is 102111221210069. The reversal of 102111221210001 is 100012122111201.

It is a happy number.

It is not a de Polignac number, because 102111221210001 - 2⁵ = 102111221209969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102111221210081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21619989426 + ... + 21619994148.

It is an arithmetic number, because the mean of its divisors is an integer number (4263098027040).

Almost surely, 2^{102111221210001} is an apocalyptic number.

It is an amenable number.

102111221210001 is a deficient number, since it is larger than the sum of its proper divisors (34307915655279).

102111221210001 is a wasteful number, since it uses less digits than its factorization.

102111221210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11237.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102111221210001 its reverse (100012122111201), we get a palindrome (202123343321202).

The spelling of 102111221210001 in words is "one hundred two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred ten thousand, one".